EasyRes - EasyRes is a fast screen resolution switcher for Mac OS X with live animated previews.
Loom - Loom is a screen recording extension for Chrome that gives people the ability to create and share media. Create your own videos using your camera, screen view, and audio. Read more about Loom.
SwitchResX - SwitchResX is a tool designed to manage resolutions of all your monitors and HDTVs.
Screencastify - Free screen recorder extension for Chrome. Capture, edit and share screencasts. No software download required. Works on Mac, Windows and Chromebooks. Screen RecorderFree screen recorder for Chrome.
QuickRes - The best way to change resolutions on your Mac
Screen Recording API by Ziggeo - The first ever embeddable screen recorder